Frequency 300 Hz Regenerative for the Diaphragm

If you're suffering from respiratory problems, then you should consider using Frequency 300 Hz Regenerative for the Diaphragm.
This frequency is going to help improve your breathing, help you to relax and decrease stress, and increase stamina. It has also been shown to be effective in reducing respiratory problems, such as asthma, bronchitis and emphysema.